Tempest; rage (5)
I believe the answer is:
storm
I believe this clue is a double definition.
'tempest' is the first definition.
(I know that tempest can be written as storm)
'rage' is the second definition.
(I know that rage can be written as storm)
(Other definitions for storm that I've seen before include "Destructive wind" , "= Gale force 10" , "Sandy, perhaps" , "Violent outburst" , "Very unfavourable climate" .)